# US 2020/0399861 A1 · Construction machine

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- Number: US 2020/0399861 A1
- Document ID: US20200399861A1
- Status: Published application
- Kind: A1
- Application number: 16/968,420
- Filed: 2019-01-16
- Published: 2020-12-24
- Earliest claimed: 2018-03-23
- Assignees: Kobelco Construction Machinery Co., Ltd.
- Applicants: Kobelco Construction Machinery Co., Ltd.
- Inventors: Masaru ITO; Hitoshi SASAKI; Seiji SAIKI
- Web page: https://patentgrep.com/patent/US20200399861A1

## CPC

- E02F 9/123: {Drives or control devices specially adapted therefor (E02F9/125 and E02F9/128 take precedence)}
- E02F 9/26: Indicating devices {(E02F5/145 takes precedence)}
- B60K 35/22: Display screens
- B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
- B60K 35/50: Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence)
- B60K 35/81: for controlling displays
- B60R 1/24: in front of the vehicle
- E02F 9/16: Cabins, platforms, or the like, for drivers ({for motor vehicles in general B62D33/06}, for cranes B66C13/54)
- E02F 9/2004: {Control mechanisms, e.g. control levers (control levers per se G05G)}
- E02F 9/205: {Remotely operated machines, e.g. unmanned vehicles (E02F3/8866 takes precedence)}
- E02F 9/264: {Sensors and their calibration for indicating the position of the work tool}
- H04N 7/18: Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- B60K 2360/162: Visual feedback on control action
- B60R 2300/205: using a head-up display
- B60R 2300/302: combining image information with GPS information or vehicle data, e.g. vehicle speed, gyro, steering angle data
- B60R 2300/70: characterised by an event-triggered choice to display a specific image among a selection of captured images
- E02F 3/32: working downwardly and towards the machine, e.g. with backhoes
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A construction machine capable of suppressing deterioration in work efficiency includes an angle detecting device that detects a relative angle between a lower travelling body and an upper slewing body, a travel lever that can be manipulated to make the lower travelling body travel, a display, a directional information generating unit that generates information related to a travelling direction of the lower travelling body based on a detected result of the angle detecting device, and a display controller. The display controller causes the display to display an arrow image indicating the travelling direction of the lower travelling body generated by the directional information generating unit when the travel lever is manipulated and does not permit the display to display the arrow image when the travel lever is not manipulated.

## Claims

### Claim 1

A construction machine comprising:
a machine body including a lower travelling body that can travel on a ground, and an upper slewing body that is provided on an upper portion of the lower travelling body and can slew about a rotational axis extending in an up-and-down direction;
an angle detecting device provided to the machine body to detect a relative angle between the lower travelling body and the upper slewing body about the rotational axis;
a travel lever that receives a manipulation for making the lower travelling body travel;
a display device disposed within an eyesight of a worker;
a directional information generating unit that generates directional information related to a travelling direction of the lower travelling body relative to the upper slewing body based on at least a detected result of the angle detecting device; and
a display controlling unit that controls the display device to display a directional information image indicating the directional information on the display device when the travel lever receives the manipulation, and not to display the directional information image on the display device when the travel lever does not receive the manipulation.

### Claim 2 (depends on 1)

The construction machine according to claim 1, wherein
the travel lever is able to receive the manipulation in a plurality of manipulation directions including a forward manipulating direction for making the lower travelling body travel forward and a backward manipulating direction for making the lower travelling body travel backward, and
the directional information generating unit generates the directional information based on the detected result of the angle detecting device and the manipulation direction of the manipulation received by the travel lever.

### Claim 3 (depends on 1)

The construction machine according to claim 1, wherein
the lower travelling body starts travelling when a manipulation magnitude of the manipulation received by the travel lever exceeds a first threshold value,
the construction machine further comprises a manipulation magnitude detecting device that detects the manipulation magnitude received by the travel lever, and
the display controlling unit makes the display device display the directional information image when the manipulation magnitude of the travel lever detected by the manipulation magnitude detecting device is equal to or greater than a second threshold value greater than 0 and smaller than the first threshold value.

### Claim 4 (depends on 1)

The construction machine according to claim 1, wherein
the upper slewing body includes an operation room including a window and allowing the worker to get inside, and
the display device includes a see-through display disposed in a portion of the window.

### Claim 5 (depends on 1)

The construction machine according to claim 1, wherein
the travel lever, the display device, the directional information generating unit, and the display controlling unit are provided in an operating region placed outside the machine body,
the construction machine further comprises at least one image capturing device that is provided to the upper slewing body to be oriented to a predetermined image capturing direction and captures an image of a sight seen from the upper slewing body, a transmitting device that is provided to the machine body and transmits a sight image captured by the at least one image capturing device and the detected result of the angle detecting device to the operating region, and a receiving device that is provided in the operating region and receives the sight image and the detected result of the angle detecting device transmitted from the transmitting device, and
the display controlling unit makes the display device display the sight image and superpose the directional information image on the sight image.

### Claim 6 (depends on 5)

The construction machine according to claim 5, wherein
the at least one image capturing device includes a plurality of image capturing devices set to different image capturing directions,
the construction machine further comprises a selecting device that is provided in the operating region and selects one among the plurality of image capturing devices,
the directional information generating unit generates the directional information based on the image capturing direction of the one among the image capturing devices selected by the selecting device and the detected result of the angle detecting device, and
the display controlling unit makes the display device display the sight image captured by the one among the image capturing devices and superpose the directional information image on the sight image.